Thomas boyce



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BUNSEN GAS BURNER.

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UNiTEn STATES PATENT OFFICE.

THOMAS BOYOE, OF NEV YORK, N. Y.

BUNSEN GAS-BURNER.

SPECIFICATION forming part of Letters Patent No. 462,685, dated November10, 1891. Application filed January 2l, 1891. Serial No. 378,528. (Nomodel.)

To @ZZ whom, it may concern:

Beit known that I, THOMAS BOYOE, of the city, county, and State of NewYork, have invented certain new and useful Improvements in BunsenGas-Burners; and I do hereby declare that the following is a full andexact description thereof, reference being had to the accompanyingdrawings, and to the letters of reference marked thereon, making a partof this specification.

My invention relates to an improvement in Bunsen burners for controllingthe ad mixture of gas and air and for adjusting the flame to variablepressures.

It has for its object to simplify the construction of a burner of thisclass and to facilitate a regulation of the flow of gas and of thevolume of air to be admitted for admirture with the gas.

It consistsin thenovel combination and arrangement of the gas-valve, incombination with an adjustable disk controlling a concentricair-passage, substantially as is hereinafter described and claimed.

In the accompanying drawings, Figure lis a central vertical section ofmy improved Bumsen burner, and Fig. 2 a cross-section in line x c ofFig. I.

My burner consists of a base A, of any suitable form, provided wit-h alateral tube or nozzle B to receive the end of a flexible tubing,whereby to connect it in the customary manner with a gas-supply pipe.This lateral tube u connects with a central chamber or bore C, ex-

tending to the upper end of the base and which is threaded to receive anexternallythreaded tubular nipple D, which terminates at its upper endin a solid conical plug or point D', to operate, as hereinafterdescribed, as a valve, and which is supported by one or more arms orbands E E axially over the open end of the nipple. The diameter of thisconical plug or valve D is reduced to correspond substantially with theinternal diameter of the nipple, so as to leave a concentric space aaround its basebetween it and the inner periphery of aninternally-threaded sleeve F, made to screw down upon the nipple. Theupper end of this sleeve is closed in to form a conical seat, thecounterpart of the solid conical plug or valve D on the nipple D,and

its apex is perforated with a small opening, which, when the sleeve isscrewed closely down upon the nipple, is completely closed.

by said valve D. The parallel inclined faces of the valve D and its seatpermit of a very nice and close adjustment of the opening between themby the movement of the sleeve F upon the nipple D, whereby the supply ofgas allowed to flow up from the base A through said opening may becompletely controlled. The sleeve F is fitted and secured by means ofradial lugs G G (see Fig. 2) within the lower end of a concentric tubeI-I, which is reduced in diameter at a point above the upper end of thesleeve F and extended thence to form a burner I. The diameter of theencircling air-tube H is so much larger than that of the sleeve F asthat it leaves a full and free air-passage ZJ between the two, whereby asupply of air is admitted to admix with the supply of gas delivered intothe burner Ifrom the nipple D. To regulate and control this supply ofair I iit a nut or threaded disk or washer K to run upon the threadedbody of the nipple D, intermediate the lower end of the sleeve and thetop of the base A. This disk is of a diameter equal to that of theair-tube H, and may be screwed up or down to adjust the interval oropening for the inflow of air between it and the lower end of saidair-tube or to close it completely.

Itis evident that various devices may be employed for connecting thegas-chamber O in the base A with a gas-supply pipe, and that also, ifdesired, the threaded nipple D may be formed in one piece with the baseA.

In the use of my invention the supply of gas to the burner may beentirely out off by simply turning the air-tube H or the connectedburner-tube I until the internal sleeve F, attached thereto, is screweddown closely upon the conical valve D', and the disk K may also bescrewed up against the lower end of the air-tube H, so that the supplyof air will at the same time be wholly cut olf. If now the air-tube beturned more or less to open the valve D', the air-passage l) will beopened proportionately by the same -movement, thereby admitting adefinite volume of air with reference to that of the gas, and therelative proportion of the two will be main- IOO disk K in connectionwith theair-tube H, so

as to keep them in contact while opening the Vgas-valve, and the propersupply of air may thereafter be admitted by screwing down the air-diskK, independently of the air-tube.

I claim as my invention- The combination, in a Bunsen burner, with agas-supply tube or nipple mounted upon a suitable base and having aconical valveplug iiXed centrally over its upper end without obstructingit, and with an internallythreaded sleeve contracted at its upper end toform a seat for said conical valve-plug and made to screw upon thenipple to open and close it, of an outer tube of enlarged diameterencircling and attached to said sleeve to leave a concentric air-passagebetween them, a burner-tube connected with the upper end of said outerair-tube above the valvefsleeve, and a controlling-disk screwing uponthe body of the nipple below the air-tube of a diameter to cover andclose the lower end of the latter when carried against it, allsubstantially in the manner and for the purpose herein set forth.

In testimony whereof I have signed lny name Y to this specification inthe presence of two subscribing witnesses.

